While film genres go in and out of style, the romantic comedy endures-from year to year and generation to generation. Endlessly adaptable, the romantic comedy form has thrived since the invention of film as a medium of entertainment, touching on universal predicaments: meeting for the first time, the battle of the sexes, and the bumpy course of true love. These films celebrate lovers who play and improvise together, no matter how nutty or at what great odds they may appear. As Eugene Pallette mutters in My Man Godfrey (1936), All you need to start an asylum is an empty room and the right kind of people. Daniel Kimmel’s book about romantic comedy is like watching a truly funny movie with a knowledgeable friend.